diff --git a/modules/pagoda/api_challenge.go b/modules/pagoda/api_challenge.go
index e684845c4..abba8ed13 100644
--- a/modules/pagoda/api_challenge.go
+++ b/modules/pagoda/api_challenge.go
@@ -28,7 +28,7 @@ func (this *apiComp) Challenge(session comm.IUserSession, req *pb.PagodaChalleng
 	}
 
 	conf, err := this.module.configure.GetPagodaConfigData(req.Cid)
-	if conf != nil {
+	if err != nil {
 		errdata = &pb.ErrorData{
 			Code:    pb.ErrorCode_PagodaNotFound,
 			Title:   pb.ErrorCode_PagodaNotFound.ToString(),
diff --git a/modules/pagoda/api_challengeover.go b/modules/pagoda/api_challengeover.go
index 59d4b270a..94d7fe6b5 100644
--- a/modules/pagoda/api_challengeover.go
+++ b/modules/pagoda/api_challengeover.go
@@ -37,7 +37,7 @@ func (this *apiComp) ChallengeOver(session comm.IUserSession, req *pb.PagodaChal
 	}
 
 	conf, err := this.module.configure.GetPagodaConfigData(req.Cid)
-	if conf != nil {
+	if err != nil {
 		errdata = &pb.ErrorData{
 			Code:    pb.ErrorCode_PagodaNotFound,
 			Title:   pb.ErrorCode_PagodaNotFound.ToString(),